I used the pre-pitch, quick pitch, weep hole protector and curb kit. These were essential for me as a DIYer to get a professional end result. I'd highly recommend the entire system to anyone looking for a perfect shower pan and curb system installation that meets code.
Making a shower pan is still very hard work but this system eliminates much of the stress associated with a DIYer's lack of experience - especially if you watch the Goof Proof Youtube videos.
Also on the Goof Proof website there is a support phone number if you have any questions. In my case I did and they answered right away and were very helpful. Great product and people that will support your installation.